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3,4,5-三甲氧基溴苯的合成 被引量:2

Synthesis of 1-Bromo-3,4,5-trimethoxybenzene
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摘要 比较了几种 3,4,5 三甲氧基溴苯 (BTMOB)的合成方法。 3,4,5 三甲氧基苯胺 (TMOA)经重氮化和Sandmeyer法合成 ,BTMOB的收率较高。确定了最佳反应条件 :n(ArNH2 )∶n(NaNO2 )∶n(NaBr) =1 0∶1 2∶1 5 ,重氮化反应温度低于 5℃ ,重氮化络合物分解时 ,回流 1h ,BTMOB的收率可达 87 5 %。 Some synthetic methods of 1 bromo 3,4,5 trimethoxybenzene BTMOB are compared.One can obtain good yield by Sandmeyer reaction after 3,4,5 trimethoxyaniline is diazotized.The optimum reaction conditions are determined:n(ArNH 2)∶ n (NaNO 2)∶ n (NaBr)=1 0∶1 2∶1 5,temperature of diazotization below 5 ℃ and the complex of diazonium salt refluxed for 1 h during decomposition.Yield of BTMOB is about 87 5%.
出处 《精细化工》 EI CAS CSCD 北大核心 2001年第8期453-455,共3页 Fine Chemicals
基金 中法政府间科技合作项目 (1996 -4 )
关键词 三甲氧基溴苯 三甲氧基苯胺 Sandmeyer反应 合成 1-bromo 3,4,5 trimethoxybenzene 3,4,5 trimethoxyaniline Sandmeyer reaction
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